Riveting-machine.



RIVETING'MACHINE.

(Application filed June 2, 1899.)

(No Model.)

Inveniors.

ED STATES PATENT OFFICE.

CHARLES J. OARNEY AND JOHN C. GORTON, OF DUNKIRK, NEW YORK.

RlVETlNG-MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 646,952, dated April10, 1900).

Application filed June 2, 1899. Serial No. 719,076. (No model.)

To rtZZ whom it may concern.-

Be it known that we, CHARLES J. OARNEY and JOHN C. GORTON, citizens ofthe United States, residing at Dunkirk, in the county of Chautauqua andState of New York, have invented certain new and useful Improvements inRiveting-Machines; and we do hereby declare the following tobe a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, reference being had to the accompanying drawings, and to theletters of reference marked thereon, forming part of this specification.

This invention relates to riveting-machines adapted to be operatedeither by steam or 00111- pressed air; and it consists, substantially,in the construction and arrangement of a cylinder, a plunger-die, abell-crank lover, a link connecting the piston with the power-arm of thebell-crank lever, and a link connecting the weight-arm of the bell-cranklever with the plunger-die, so that the maximum power of the cylinder isexerted on the plunger-die with an increasing efficiency from thebeginning to the end of its stroke, and also constructing the frame ofthe machine so as to inclose the mechanism, the cylinder being either anintegral part thereof or made removabletherefrom, these and otherfeatures of the invention being hereinafter fully set forth anddescribed, and illustrated in the accompanying drawings, in which-Figure l is a View in elevation of the rear end of the machine. Fig. 2is a vertical central section 'on the line W W in Fig. 1 looking in thedirection of the arrow. Fig. 3 is a transverse section of the piston andbellcrank-lever mechanism on the line X X in Fig. 2 looking in thedirection of the arrow Y. Fig. 4: is a section of a portion of the frameand of the plunger-die on the line X X in Fig. 2 looking in thedirection of the arrow Z. Fig. 5 is aview in elevation of a modifiedconstruction of the plunger-die. Fig. 6 is a view in elevation, showinga modified construction of the upper part of the frame with the cylinderremovable.

In the drawings thus illustrating our invention, A is the frame of themachine, either made of a single casting with a removable piston-head L,as shown in Figs. 1 and 2, or

' with removable cylinder R, as illustrated in the modified constructionshown in Fig. 6.

The cylinder R is at right angles to the guide 0 of the plunger-die CThe frame A extends downward below the cylinder R for some distance,where it curves laterally to a point directly under the center of theplungerguide 0, so as to support an anvil-die A. The plunger-guide 0extends up through the top of the frame A, where there is ascrewthreaded sleeve extension C thereof, one side of which is split andprovided with a clamping-bolt K. In this sleeve extension (3 there is ahollow nut H, in which the upper part of the fulcrum G is mounted, inwhich ful .crum the axis F of the bell-crank lever F is pivoted in linewith the axis of the plungerdie 0 hereinafter described, and by means ofwhich nut H the fulcrum G can be adjusted up and down, as desired. Thepiston J is hollow at its rear end and is mounted in the cylinder R andprovided with a cen-- tral boss J, in which one end of a double link Eis pivoted, the opposite end of said link being pivoted to the power-armF of the bell-crank lever F. A link D is also pivoted at one end to theweight-arm F of the bell-crank lever F, the opposite end of said linkbeing pivoted in a slot in the plungerdie 0 near the lower end thereof,so that as the piston J moves forward the power-armF travels across theline of greatest efiiciency and at the same time the weight-arm Ftravels toward the line of greatest efficiency, the bellcrank lever F,pivoted at its axis F to the fulcrum G, the link E, connecting thepowerarm F thereof with the piston J, and the link D, connecting theweight-arm F thereof with the plunger-die 0 operating to'communicate thepower of the piston J to the plunger-die, so as to move the plunger-die0 up and down and deliver to the plunger-die the full effective power ofthe piston both at the beginning and end of its downward traverse.

The end of the front end of the piston J is provided with a cupped diskS, of leather or other suitable material, which is secured to the end ofthe cylinder bya plate M, bolted thereto. The piston J is also providedwith cylinder-rings T of the usual construction. The front end of thepiston J is also, provided with a central projection J which enters astroke.

central recess in the piston-head L, so that the steam or air inclosedtherein operates to cushion the piston at the end of its backwardtraverse. In the lower part of the cylinder B there is a port R enteringthe cylinder at the front, and a port 3*, entering the cylinder at therear of the piston J,'from which ports pipes O and P connect with aplug-valve B, the stem 13 of which extends out to one side of the frameA, where it is provided with an operating-lever Q. This valve 13 hasexhaust-ports l3 and B and the valve-plug B is provided with passages Band B. The passage B when registering with the inletpipe N and the pipeO,allows the steam or compressed air to enter the cylinder through theport R and drive the piston Jforward, while at the same time the passage13 registers with the port 13 and the pipe P, so that any steam or airin the cylinder behind the piston will exhaust through the port R andthe pipe P. When, however, the handle Q is moved back, so that thepassage B registers with the pipe 0 and the port E the steam orcompressed air in front of the piston exhausts through the port-B andthe passage B, then registering with inlet-pipe N and the pipe P, allowsthe steam or compressed air to enter the cylinder behind the piston Jthrough the pipe P to mave the piston back on its return Thus themachine is operated by moving the handle Q back and forth, as abovedescribed.

The construction of plunger-die shown in Fig. 5 is simply a modifiedconstruction of the plunger-die shown in Fig. 2, in which the link D ispivoted in aslot in the plunger-die, While in this modified constructionthe link D is pivoted to an ear or cars C on one side of theplunger-die.

In the modified construction shown in Fig. 6 the cylinder R is castseparate from the frame A and bolted thereto. In all other respects thisconstruction is the same as hereinbefore described.

Having thus described our invention so as to enable others to constructand use the same, what we claim as new, and desire to secure by LettersPatent of the United States,

1. The combination in a riveting-machine, of a cylinder and a pistonoperating therein, a plunger-die, a bell-crank-lever and link mechanismconnecting the piston and plunger-die and so arranged that the power-armof the bell-crank lever travels across, and the weight-arm thereoftoward the line of greatest efficiency, substantially as set forth.

2. The combination in a rivetingmachine, of a cylinder and a pistonoperating therein, a plunger-die, a bell-crank lever, the axis of whichis pivoted to a fulcrumin line with the travel of the plunger-die, alink connecting the piston with the power-arm of the bellcrank lever,and a link connecting the weightarm thereof with the pl linger-die,substantially as set forth.

3. The combination in a riveting-machine, of a frame made of a singlecasting, chambered out so as to inclose the mechanism, a cylinder insaid frame, a piston in said cylinder, a plunger-die guide in said framesubstantially at right angles to the travel of the piston, ananvil-support on said frame in line with the travel of the plunger-die,a bellcrank lever the axis of which is pivoted to an adjustable fulcrumin line with the travel of the plunger-die, a link connecting the pistonwith the power-arm of said bell-crank lever, and a link connecting theweight-arm of said bell-crank lever with the plunger-die, substantiallyas set forth.

4. The combination in a riveting-machine, of a cylinder and piston, aplunger-die, a bell-crank-lever and link mechanism connecting saidpiston and plunger-die, so arranged that the power-arm of saidbell-crank lever travels across, and the weight-arm toward the line ofgreatest efficiency, whereby the full power of the piston is deliveredto the plunger-die with an increasing efficiency from the beginning tothe end of the stroke, substantially as set forth.

5. The combination in a riveting-machine, of an inclosedframe,comprising substantially a cylinder, a plunger-die guide, andananvildie support, a piston, a plungerdie, bellcrank-lever and linkmechanism connecting said piston and plunger-die inclosed within saidframe, and an adjustable fulcrum for said bell-crank-lever mechanism,substan tially as set forth.

6. In a riveting-machine, a cylinder, a piston operating therein, aplunger-die operating at substantially right angles to the travel of thepiston, bell-crank-lever and link mechanism connecting the piston andplunger, and a f ulcru m for said bell-crank lever adjustable in linewith the travel of the plunger, substantially as set forth.

7. The combination in ariveting-machine, of a cylinder and piston, aplunger-die operating substantially at right angles to said piston,bell-crank-lever and link mechanism connecting the piston and theplunger, and means for adjusting the whole bell-crank-lever mechanism inline with the travel of the plunger-die, substantially as set forth.

In testimony whereof we affix our signatures in presence of twoWitnesses.

CHARLES J. CARNEY. JOHN G. GORTON.

IIO

